Home / 8,107.40-12,162.28-2,561.16

Finding the Fourth Proportional to 8,107.40, 12,162.28 and 2,561.16

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Solution

The fourth proportional to 8,107.40, 12,162.28 and 2,561.16 is: 3,842.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,107.40 : 12,162.28 = 2,561.16 : x
  2. Step 2: Convert to fraction form
    8,107.40/12,162.28 = 2,561.16/x
  3. Step 3: Cross multiply
    8,107.40x = 12,162.28 × 2,561.16
  4. Step 4: Simplify right side
    8,107.40x = 31,149,545.04
  5. Step 5: Solve for x
    x = 31,149,545.04/8,107.40
  6. Step 6: Final answer
    x = 3,842.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.